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وارد شوید

Physics for IGCSE & O level - Waves And Sounds (Section 3 - No. 24)

What is the speed of light?
340 m/s
3.0 x 10^8 m/s
1500 m/s
20 m/s

توضیح

The speed of light is approximately 3.0 x 10^8 m/s.

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